html,body,#app{
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    background-color: #fff;
}

#app{
    background-image: linear-gradient(125deg,#D32F2F,#C2185B,#7B1FA2,#512DA8,#303F9F);
    background-size: 400%;
    animation: bgMove 6s infinite;
    position: relative;
    user-select: none;
}

@keyframes bgMove{
    0%{
        background-position: 0 50%;
    }
    50%{
        background-position: 100% 50%;
    }
    100%{
        background-position: 0 50%;
    }
}


.ball{
    display: block;
    width: 5rem;
    height: 5rem;
    background-color: rgba(0,0,0,.2);
    border: 1px solid #000;
    box-shadow: 0 0 .5rem 0 #000;
    border-radius: 100%;
    position: absolute;
    top: 10%;
    left: (50% - 2.5rem);
}

.ball-before-move{
    animation: ballBeat 3s infinite;
}

@keyframes ballBeat{
    0%,10%{
        top: 10% ;
    }
    50%,60%{
        top: 20% ;
    }
    100%{
        top: 10% ;
    }
}

#baffle{
    display: block;
    width: 10rem;
    height: .5rem;
    background-color: rgba(255, 255, 255, .5);
    box-shadow: 0 0 .3rem 0 #fff;
    border-radius: 5rem;
    position: absolute;
    bottom: 10%;
    left: (50% - 5rem);
}


#actionBtn{
    color: #333;
    border: 1px solid #000;
    box-shadow: 0 0 .5rem 0 #000;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 10rem;
    height: 3rem;
    border-radius: 3rem 0;
    position: absolute;
    top: (50% - 1.5rem);
    left: calc(50% - 5rem);
    letter-spacing: .2rem;
    transition: transform .5s;
    cursor: pointer;
}


#actionBtn:hover{
    background-color: rgba(255,255,255,.2);
    color: #fff;
    transform: rotate(360deg);
    width: 10rem;
    height: 10rem;
    top: calc(50% - 5rem);
    left: calc(50% - 5rem);
    border-radius: 100%;
}

#gameInformation{
    color: #fff;
    display: none;
    position: absolute;
    top: 1rem;
    left: 1rem;
}

#result{
    display: none;
    width: 25rem;
    height: 15rem;
    position: absolute;
    top: calc(50% - 7.5rem);
    left: calc(50% - 12.5rem);
    border: 1px solid #000;
    box-shadow: 0 0 .5rem 0 #000;
    border-radius: 15rem 0;
    color: #333;
    align-items: center;
    justify-content: center;
}

